If the filling is fairly tame (that is, it's not going to fall out easily), I'll generally cut it into squares or triangles of a size so that I can eat each resultant piece in a few bites. This varies with bread size.

If, on the other hand, the filling is more adventurous, I'll either just bite into it as is (said filling flying everywhere) or, more often, attempt to reduce it into smaller sized chunks which can be eaten with somewhat more dignity.

And cutting towards yourself is a bad habit to get into if you're ever going to use a sharp knife in the future. As such, I cut left to right, rotating the sandwich (or moving around it) as necessary.

(Original post by Laurawhitters)
urgh it actually makes me cringe when i see someone eating a two slice sandwich when its not cut i have to run find them a knife and cut it fore them! i don't get why you would want to eat an uncut one

And do you cringe at the type of bread people use too? I'm a bread Nazi and use seeded multigrain loaves. What about you?

I don't make them very often but when i do i just cut top to bottom.
I remember when my brother was little he would cry and refuse to eat sandwiches if they were cut into triangles, he really hated them!
I look after children at the moment and i always ask them how mummy cuts the sandwiches because i couldn't deal with them not eating them!